The Brennan Center for Justice submitted a Freedom of Information Act request seeking records about public/unsealed international terrorism and terrorism-related convictions from September 11, 2001, through December 31, 2016.

The Brennan Center for Justice, in conjunction with Charles Kurzman, a professor of sociology at the University of North Carolina Chapel Hill, filed a Freedom of Information Act request with the Department of Justice seeking records of terrorism-related cases in the National Caseload Data maintained by the Executive Office for United States Attorneys.